HD 400×551
HD wide flange columns from Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1.
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 455 mm | 17.9134 in |
| Flange width, b_f | 418 mm | 16.4567 in |
| Web thickness, t_w | 42 mm | 1.6535 in |
| Flange thickness, t_f | 67.6 mm | 2.6614 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 2.26000e+9 mm⁴ | 5,429.672 in⁴ |
| Elastic modulus, Sₓ | 9,940,000 mm³ | 606.576 in³ |
| Plastic modulus, Zₓ | 12,000,000 mm³ | 732.2849 in³ |
| Radius of gyration, rₓ | 180 mm | 7.0866 in |
| Distance to top fibre | 227.5 mm | 8.9567 in |
| Distance to bottom fibre | 227.5 mm | 8.9567 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 825,000,000 mm⁴ | 1,982.07 in⁴ |
| Elastic modulus, S_y | 3,950,000 mm³ | 241.0438 in³ |
| Plastic modulus, Z_y | 6,050,000 mm³ | 369.1937 in³ |
| Radius of gyration, r_y | 109 mm | 4.2913 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 92,500,000 mm⁴ | 222.2321 in⁴ |
| Warping constant, C_w | 3.09000e+13 mm⁶ | 115,068.428 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 551 kg/m | 370.2549 lb/ft |